If A={a,e,I,o,u,a,e,i} then n (A) ______

If A={a,e,I,o,u} and B={a,I,e,c,d } then n(A-B) is ______.

If A = {a,e,i,o,u}, B= {a,b,c} then find A∪B and A∩B ?

If U= {a,e,I,o,u),A={a,e,i} , B = {e,o,u}, C = {a,I,u}, then : (i) What is AuuU ? (iii) What is AcapU ? (iii) What is Auuphi ? (iv) What is Acapphi ?

If A = {a,b,c} B = {b,d,e} C ={a,e,I,o,u} then n [(A cap C) xx B] is ........... .

If A = { a,e,I,o,u} , write any the three subsets of A.

If X={a,e,I,o,u} then which of the following is a correct statement